Silly Question About MySQL !!!...

Silly Question About MySQL !!!...

Hi from Córdoba, Argentina !. Just wanted to know why QuickDB (http://code.google.com/p/quickdb/) can't work along with Ext GWT ?. Coz I was very looking forward but every time I put a line of code about that I keep getting mistakes !!!...
Where can I find examples by the way about sending and retieving data to and from thje server but in java ?.
Really than kx people !. hope it dont trakes too much time to answer....